“Sonic masturbation”

Once upon a time, in the late seventies, we´ve had nothing. No computers, no Internet, no MIDI, no potatos, no shampoo.
But we´ve had groundbreaking music. And german tv showed it.
The performance of the song “The barry graves” by Klaus Schulze is taken from the WDR show “Die Deutschrock Nacht” [sic!].